Final answer:
The utopian visionaries typically did not prioritize high population densities in their communities. Instead, they valued the creation of a perfected new social order, which often featured financial impracticality, sociological naivete, and rigidity in their visions.
Step-by-step explanation:
The utopian visionaries all share all of the following features except high population densities. Utopian societies often focused on the creation of a perfected new social order and not merely a reformation of the old. Their approaches included a variety of social experiments, but generally shared several characteristics: financial impracticality, due to their experimental nature and oftentimes idealistic economic models; sociological naivete, as many of their ideals were untested in practice; and rigidity in their visions, with adherence to specific ideological or religious beliefs. These utopian communities, such as the Owenites, Fourierists, and the Shakers, amongst others, usually emphasized communal living and shared property, not high population densities. Many of these communities eschewed large, dense populations in favor of smaller, more manageable, and interconnected groups. The focus was more on community and quality of life over the scalability that high population densities might imply.